TY  - BOOK
AU  - Ruttner, Friedrich.
TI  - Breeding techniques and selection for breeding of the honeybee: : introduction to rearing of queens, the conduct of selection procedures ..
U1  - 638.12 
PY  - 1988///
CY  - Brighton, England
PB  - British Isles Bee Breeders Association
KW  - Abejas reina
KW  - Abejas
KW  - Mejoramiento
N1  - Fotocopia
ER  -